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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-13 17:08:22 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-15 02:21:45 -0400 |
| commit | 326be7b484843988afe57566b627fb7a70beac56 (patch) | |
| tree | 04a15bfdb681ad09444cf2f3d72ae0d38fb0432b | |
| parent | 65cfc6722361570bfe255698d9cd4dccaf47570d (diff) | |
| download | linux-326be7b484843988afe57566b627fb7a70beac56.tar.gz linux-326be7b484843988afe57566b627fb7a70beac56.tar.bz2 linux-326be7b484843988afe57566b627fb7a70beac56.zip | |
Allow passing O_PATH descriptors via SCM_RIGHTS datagrams
Just need to make sure that AF_UNIX garbage collector won't
confuse O_PATHed socket on filesystem for real AF_UNIX opened
socket.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/file_table.c | 2 | ||||
| -rw-r--r-- | net/core/scm.c | 2 | ||||
| -rw-r--r-- | net/unix/garbage.c | 2 |
3 files changed, 4 insertions, 2 deletions
diff --git a/fs/file_table.c b/fs/file_table.c index 3c16e1ca163e..74a9544ac770 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -305,6 +305,8 @@ struct file *fget_raw(unsigned int fd) return file; } +EXPORT_SYMBOL(fget_raw); + /* * Lightweight file lookup - no refcnt increment if fd table isn't shared. * diff --git a/net/core/scm.c b/net/core/scm.c index bbe454450801..4c1ef026d695 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -95,7 +95,7 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp) int fd = fdp[i]; struct file *file; - if (fd < 0 || !(file = fget(fd))) + if (fd < 0 || !(file = fget_raw(fd))) return -EBADF; *fpp++ = file; fpl->count++; diff --git a/net/unix/garbage.c b/net/unix/garbage.c index f89f83bf828e..b6f4b994eb35 100644 --- a/net/unix/garbage.c +++ b/net/unix/garbage.c @@ -104,7 +104,7 @@ struct sock *unix_get_socket(struct file *filp) /* * Socket ? */ - if (S_ISSOCK(inode->i_mode)) { + if (S_ISSOCK(inode->i_mode) && !(filp->f_mode & FMODE_PATH)) { struct socket *sock = SOCKET_I(inode); struct sock *s = sock->sk; |